Convert sccm to Gallons per Minute
1 sccm equals 0.0002641720524 US gallons per minute (GPM), at the reference conditions 0 °C and 101.325 kPa, with the gas at those conditions.
1 sccm = 0.0002641720524 GPM
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk sccm to US gallon per minute converter to paste a column from Excel.
How to Convert sccm to Gallon per Minute
- 1 sccm = 0.0002641720524 GPM
- 1 GPM = 3785.411784 sccm
- Example: convert 15 sccm to GPM: 15 sccm = 15 × 0.0002641720524 GPM = 0.003962580785 GPM
Reference conditions. sccm: Standard flow: volume the gas would occupy at the standard reference conditions (default 0 °C, 101.325 kPa). Converting to actual flow needs the actual temperature and pressure.
Standard vs actual flow. The values above assume the gas is at the standard reference conditions (0 °C, 101.325 kPa). Set the actual temperature and pressure in the converter to get the real volumetric flow.
Formula
GPM = sccm × 0.0002641720523581
or GPM = sccm ÷ 3785.411784
Derivation from SI units:
- 1 sccm = 10⁻⁶ m³ ÷ 60 s, measured at standard reference conditions
- 1 GPM = 231 in³ ÷ 60 s = 0.003785411784 m³ ÷ 60 s = 6.30901964 × 10⁻⁵ m³/s
- 1 sccm = 1.666666666667 × 10⁻⁸ m³/s ÷ 0.0000630901964 m³/s per GPM = 0.0002641720523581 GPM
- Standard ↔ actual: Q_actual = Q_standard × (T_actual / T_ref) × (P_ref / P_actual), absolute T and P.
Both units are defined exactly, so the factor is exact. sccm definition: sccm; Gallon per Minute definition: US gallon per minute.
Worked examples
- A reading of 50 sccm converts to 0.01320860262 GPM.
50 sccm × 0.0002641720524 = 0.01320860262 GPM - A value of 2000 sccm is 0.5283441047 GPM.
2000 sccm × 0.0002641720524 = 0.5283441047 GPM
sccm to Gallon per Minute conversion table
| sccm | Gallons per Minute (GPM) |
|---|---|
| 1 sccm | 0.0002641720524 GPM |
| 2 sccm | 0.0005283441047 GPM |
| 5 sccm | 0.001320860262 GPM |
| 10 sccm | 0.002641720524 GPM |
| 20 sccm | 0.005283441047 GPM |
| 50 sccm | 0.01320860262 GPM |
| 100 sccm | 0.02641720524 GPM |
| 200 sccm | 0.05283441047 GPM |
| 500 sccm | 0.1320860262 GPM |
| 1000 sccm | 0.2641720524 GPM |
| 2000 sccm | 0.5283441047 GPM |
| 5000 sccm | 1.320860262 GPM |
| 10000 sccm | 2.641720524 GPM |
| 20000 sccm | 5.283441047 GPM |
| 50000 sccm | 13.20860262 GPM |
Where it's used
sccm are used for mass flow controllers in semiconductor, vacuum and coating processes, while US gallons per minute appear in pump, well and irrigation ratings. Both measure volumetric flow rate (volume per unit time), so the conversion is a fixed factor.
sccm to other flow rate units
| Conversion | 1 sccm equals |
|---|---|
| sccm to cubic meter per second | 1.666666667 × 10⁻⁸ m³/s |
| sccm to cubic meter per hour | 0.00006 m³/h |
| sccm to liter per second | 0.00001666666667 L/s |
| sccm to liter per minute | 0.001 L/min |
| sccm to cubic centimeter per second | 0.01666666667 cm³/s |
| sccm to cubic centimeter per minute | 1 cm³/min |
| sccm to SLPM | 0.001 SLPM |
| sccm to cubic foot per minute | 0.00003531466672 CFM |
| sccm to US gallon per minute | 0.0002641720524 GPM |
Frequently asked questions
How many US gallons per minute are in 1 sccm?
1 sccm = 0.0002641720524 GPM (reference conditions 0 °C and 101.325 kPa, with the gas at those conditions).
How do I convert sccm to US gallons per minute?
Multiply the value in sccm by 0.0002641720524, or divide it by 3785.411784. For example, 15 sccm × 0.0002641720524 = 0.003962580785 GPM.
Is the sccm to GPM conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- SEMI E12 Guide for Standard Temperature and Pressure Used in the Measurement of Mass Flow, SEMI , standard conditions 0 °C, 101.325 kPa.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Section 7.5 (reference conditions).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gallon [U.S.] per minute (gpm)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert sccm to Gallons per Minute. Retrieved October 17, 2026, from https://scientificconverters.com/flow-rate/sccm-to-gallons-per-minute/
IEEE
Scientific Converters, "Convert sccm to Gallons per Minute," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/flow-rate/sccm-to-gallons-per-minute/